JPS59130060A - Mercury-vapor discharge clamp - Google Patents

Abstract

PURPOSE:To let mercury stick fast to an outer tube, thereby preventing its appearance capacity from damaging as well as to make the high efficiency of a discharge lamp securable even in time of high ambience temperature, by setting up a metal, which forms amalgam in a way of interacting with sealed mercury inside the lamp, in a holding tube to which its one end installed in the bottom of an outer tube bulb is open. CONSTITUTION:A light transmittable outer tube bulb 2 and an outer tube bulb bottom 3 are hermetically welded together, while mercury and rare gas are sealed inside. In the outer tube bulb 2, there are provided with two U-shaped glass tubes 6 whose one end has an opening part 4 while the other end installs an electrode 5 and being welded to the outer tube bulb bottom 3 so as to pass the electrode 5 through the inside; these two glass tubes 6 make up an inner tube. At the outer tube bulb bottom 3, a glass holding tube 7 whose one end is closed while the other end is opened is projectingly installed in position between these two glass tubes 6 as its opening surface is directed toward the outer tube side, while an amalgamated metal 8 forming amalgam interacting with mercury is installed inside this tube 7.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a mercury vapor discharge lamp, such as a fluorescent lamp, in which the discharge path is bent to reduce the external shape and make it possible to replace an incandescent lamp. be.

Currently, fluorescent lamps are widely used as light sources for general illumination due to their high efficiency, low glare similar to that of dual-sided light emission, and wide selection of light colors. However, incandescent lamps, which have an efficiency of 1/3 to 115 degrees of that of fluorescent lamps, are still widely used, which poses a problem in the current era of strong demand for energy conservation.

This phenomenon is due to the fact that incandescent lamps are small, high brightness, and have a single-cap shape that fluorescent lamps do not have, so they have a greater degree of freedom in the design of lighting equipment, and because they are close to two-point light sources, they can be used for accent lighting with shadows or mood lighting. This is because it is easy to illuminate.

In order to provide fluorescent lamps with the advantages of incandescent light bulbs, attempts have been made to miniaturize fluorescent lamps, and some have even been put into practical use. For example, a fluorescent lamp is bent into a U-shape to make it about half the length of a conventional fluorescent lamp, and the cap is pushed to one side.
No. 27473) has been proposed. However, although the U-shaped fluorescent lamp can be downsized to about half the length of a typical straight tube lamp, it has the disadvantage that its brightness and efficiency decrease when it is made as small as a light bulb. To solve this,
The U-shaped fluorescent lamp is further folded into two (double U-shape) to keep the lamp length large while reducing the overall shape.The lamp is integrated with the lighting device inside the outer tube globe, and an E-shaped cap is attached. Lamp for replacing light bulbs (1986)
No. 8058, U.S. Pat. This lamp is highly efficient as a stand-alone double U-shaped fluorescent lamp, but when it is integrated with a lighting device inside the outer bulb globe and used as a replacement for a light bulb, the temperature inside the globe rises when two lights are lit.

The drawback was that the mercury vapor pressure inside the lamp increased significantly, reducing efficiency. Therefore, in order to suppress the increase in mercury vapor pressure while keeping the lamp length large.

Inside the sealed outer tube filled with mercury and rare gas, there is a rung consisting of two U-shaped inner tubes, one end of which is open and the other end has an electrode, and which are hermetically sealed to the bottom of the outer tube pulp. It has been proposed (Japanese Patent Application Laid-Open No. 54-44370.

JP-A No. 57-44957).

In this lamp, the coldest point of the lamp, which determines the mercury vapor pressure, which affects efficiency, is formed on the outer tube wall, so the mercury vapor pressure does not rise too much even when the lamp is lit, and it is a light bulb replacement lamp with a built-in double U-shaped lamp. Efficiency is further improved. However, when this lamp is used as a replacement for a light bulb in a sealed or semi-sealed lighting fixture, it has the disadvantage that the temperature of the outer tube wall rises, resulting in a decrease in efficiency.

In addition, this lamp has the disadvantage that the coldest temperature of the lamp is formed on the outer tube wall, so that mercury adheres to the glass wall, making the lamp look unsightly and impairing its marketability.

This invention improves the above-mentioned drawbacks.

Highly efficient even when used at high ambient temperatures, such as in closed appliances,
Moreover, the present invention provides a small mercury vapor discharge lamp with a good appearance without mercury adhering to the outer tube wall.The lamp is constructed of a sealed outer tube filled with mercury and a rare gas, with one end open and the other end. In a lamp with a structure in which a plurality of inner tubes are hermetically welded together with electrodes to the bottom of the outer tube pulp, a holding tube with one end open at the bottom of the outer tube pulp is inserted into the outer tube pulp with the opening surface inside the outer tube pulp. It is characterized in that it is provided in a protruding manner, and that a metal that interacts with the mercury of the lamp to form an amalgam is placed inside the tube.

The details of this invention will be explained below with reference to the drawings.

Fig. 1 shows a compact fluorescent lamp according to an embodiment of the present invention, and Fig. 2 shows a lamp of this embodiment integrated with a current limiter and a starter, and an E-type base attached to it, which can be screwed directly into a light bulb socket. This is an example of a lamp that can be used as a replacement for a light bulb.

In FIG. 1, a light-transmitting outer pulp (2) and a bottom surface (3) of the outer pulp are hermetically welded, and mercury and rare gas are sealed inside. Inside the outer tube pulp (2).

It has an opening (4) at one end and an electrode (5) installed at the other end.

It has two U-shaped glass tubes (6) welded to the bottom surface (3) of the outer pulp pulp so that the electrodes (5) can pass inside. These two glass tubes (6) form an inner tube. The bottom surface of the outer tube pulp (3) has a gas 2 with one end closed and the other end open; a holding tube (7) made of ζ is protruded between two glass tubes (6) with the open side facing inside the outer tube. The tube (7) contains an amalgam-forming metal (8) that interacts with mercury to form an amalgam.
is installed.

A phosphor layer is applied to the inner wall of the glass tube (6).

The compact fluorescent lamp (1) is constructed as described above.

In Figure 2, the current limiter (9) and starter 00 are housed inside the lighting container αυ, and an E-type cap housing is attached to the lighting container αυ.
This lighting container αυ and a small fluorescent lamp (1) are integrally formed to form a fluorescent lamp (S) as an alternative to a light bulb, and FIG. 3 shows its connection circuit.

To light the lamp, connect E to the power socket as shown in Figure 3.
When the mold cap α is screwed in and the power is turned on, the starter 00
)1 For example, when using a glow lamp, a glow discharge occurs and the bimetallic electrodes become short-circuited, causing the two electrodes (
5) A preheating current flows, the electrodes are sufficiently heated, and thermoelectrons are emitted. Thereafter, the glow lamp is cooled and the bimetal is opened, but at this time a high induction kick voltage is applied to the electrodes (5) at both ends of the lamp by the current limiter (9).
, (5) occurs, and the lamp is lit by connecting the discharge arc as shown by the dashed line in the inner tube. The mercury enclosed in the lamp interacts with the amalgam-forming metal (8) placed inside.

Because it is an amalgam (8a) inside the tube (7).

Even if the wall of the outer tube is at its coldest temperature, mercury does not adhere to the wall of the outer tube, resulting in a good appearance. Also.

Even at high ambient temperatures, the mercury vapor pressure is resolved by the amalgam, so the composition of the amalgam and the installation position of the tube (7), that is, the temperature of the amalgam, can be selected arbitrarily, so high efficiency can always be achieved depending on the usage environment. be able to.

A lamp was manufactured using this method.

<Example 1. 〉 The lamp has the shape shown in Figure 1, and the outer bulb has a diameter of 70 m.

Height + 00mm1 Inner tube diameter 76 mTL + length 180
Two mm U-shaped glass tubes were placed facing each other, and 3 torr of argon and 401n9 of mercury were filled as gases.

The phosphor used was a normal artemon-adducted calcium phosphate phosphor. A lamp with an amalgam has a glass holding tube with a diameter of 5 mm protruding from the bottom of the outer bulb, and an indium metal 1507 as an amalgam-forming metal is placed inside the lamp.
119'! The lamp was installed with an i7. The light output of these lamps and the presence or absence of mercury adhesion to the outer tube were examined.The light output was set at a constant lamp current of 320 mA.

Measurements were made while changing the ambient temperature from 25°C to 130°C, 35°C, and 40°C. The results are shown in Table 1.

Table 1: In lamps without amalgam, mercury adheres to the coldest part of the outer bulb, making the outer bulb dirty and unsightly, and the brightness decreases significantly as the ambient temperature rises. On the other hand, lamps equipped with amalgam do not have mercury attached to the outer bulb, do not reduce the marketability of the outer bulb, and even when the ambient temperature rises, the vapor pressure (mercury) is controlled by the amalgam. Therefore, an advantage was obtained that the decrease in brightness was small.

<Example 2> As another example, lamps were manufactured in which the temperature and composition of the amalgam were varied.

The outer and inner tubes of the lamp and the phosphor used were as in Example 1. The length of the glass holding tube in which the amalgam was placed was changed to change the temperature of the amalgam into two parts: high and low. The amalgam composition is indium metal +
For 50Mp, mercury filled i25In9. 40In9
and changed it. These lamps were connected to a +5W commercial ballast, the input voltage was kept constant at 100V, the ambient temperature was varied, and the light output and the state of mercury adhesion to the outer bulb were observed. Table 2 shows the results.

The amalgam lamp does not have mercury deposited on the outer bulb, and by appropriately selecting the amalgam composition and temperature, it was possible to obtain high brightness even at high circumferential concave temperatures. Therefore,
60W is surrounded by lighting equipment and has a lighting condition of high ambient temperature.
A compact, highly efficient fluorescent lamp that can be directly plugged into a light bulb and used as a replacement for light bulbs has been obtained.

In the example described above, an amalgam holding tube that protrudes into the lamp from the bottom of the two outer pulps was provided between the two inner glass tubes, but the present invention is not limited to this. It may be provided.

It goes without saying that the amalgam holding tube is not limited to the glass shown in the embodiments, but metal tubes, ceramic tubes, etc. can also be used as long as they can be airtightly sealed with the bottom surface of the outer tube.

As explained above, this invention is a lamp filled with mercury and a rare gas like a fluorescent lamp, and its structure is such that one end is open in a sealed outer tube, and the other end is hermetically sealed with an electrode on the bottom of the outer tube pulp. In those equipped with an inner tube consisting of a plurality of welded glass tubes.

A holding tube with one end open at the bottom of the outer tube pulp is provided so as to protrude into the outer tube pulp, and the mercury sealed in the lamp acts within this holding tube.

It is characterized by the installation of metal that forms an amalgam, which prevents mercury from adhering to the outer tube and impairing its appearance and performance, and allows high efficiency to be obtained even at high ambient temperatures.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an assembly of a small fluorescent lamp showing an embodiment of the present invention, FIG. 2 is a perspective view of a light bulb replacement type lamp in which the lamp shown in FIG. 1 and a lighting container are integrated; FIG. 3 is a diagram showing an example of an electrical circuit of the light bulb replacement type lamp shown in FIG. 2. In the figure, (y) is a small fluorescent lamp, (2) is the outer tube pulp, (3) is the bottom of the outer tube pulp, (4) is the opening, and (5) is the outer tube pulp.
is an electrode. (6) is a glass tube, (7) is a holding tube, (8
) is an amalgam-forming metal, (9) is a current limiter, and Mouse is a starter. 11) is a lighting container, a is an E-type cap, and (su) is a fluorescent lamp that replaces a light bulb. Note that the same reference numerals in each figure indicate the same or corresponding parts. Agent Makoto Kuzuno - Figure 1 7 Figure 2 Figure 3 also 1 Mr. Commissioner of the License Agency 1 Indication of the case Patent Application No. 58-5638 2
K Ming (7) name 4jF mercury vapor emission 7 tun 3,
Relationship with the case of the person making the amendment Patent applicant address Marunouchi-Tagawa 12, Chiyo 111-ku, Tokyo
City No. 3 Name (601) Ohryo Electric Co., Ltd. Representative: Hitoshi Katayama 4, Agent address: Chiyo, Tokyo 2-chome 2-chome, Okihi-no-uchi 2
No. 32: Detailed explanation of the invention of the specification subject to amendment. 6. The statement of contents of the amendment shall be amended as follows. Page 1 [Written amendment to the above procedure (spontaneous)] 581223 Showa year, month, day, Mr. Commissioner of the Japan Patent Office 1, Indication of the case: Japanese Patent Application No. 58-5638 2, Name of the invention: Mercury vapor discharge lamp 3, Representative of the person making the amendment: Hitoshi Katayama Part 5, Subject of amendment Column 6 of the contents of the amendment in the procedural amendment submitted dated August 19, 1980 Contents of the amendment Page 2, line 5 to line 1, page 10 of the above procedural amendment 8～
Before correction on line 9, ``Keep the input voltage 100■ constant'' and the correction bag ``Make the input voltage y1oov-'' correct everything in 711i below. [Koshi 10 lines 8 to 9 "Input voltage 100 constant"
The statement has been corrected to ``Keep the input voltage constant at 41oov''. that's all

Claims (3)

[Claims] (1) A sealed light-transmissive outer tube bulb with mercury and a rare gas sealed inside, and a light-transmitting outer bulb disposed inside the outer bulb pulp, with a phosphor layer on the inner surface and one end open. In a mercury vapor discharge lamp, the other end is hermetically sealed to the bottom of the outer bulb and an inner tube such as a plurality of glass tubes each having an electrode inside. One end is open. A mercury vapor discharge lamp comprising: a holding tube provided such that the opening surface is within the outer pulp pulp; and a metal placed within the holding tube that interacts with mercury within the outer bulb to form an amalgam. . (2) The mercury vapor discharge lamp according to claim 1, wherein a portion of the open ends of a plurality of glass tubes are welded and connected to each other with glass. (3) A sealed, light-transmitting outer tube bulb filled with mercury and a rare gas, and disposed within this outer tube pulp,
an inner tube consisting of a plurality of glass tubes each having a phosphor layer on its inner surface, one end of which is open, the other end of which is hermetically sealed to the bottom surface of the outer tube bulb, and electrodes provided therein; At the bottom of the outer tube valve. A discharge lamp is provided with a holding tube which has a metal inside that acts with mercury in the outer bulb to form an amalgam, has an open end at one end, and is provided so that the open surface is within the outer bulb pulp,
A mercury vapor discharge lamp which is formed integrally with a lighting container containing a current limiter and a starter, and an E-type cap is attached to the lighting container.